Pokémon Gym Leaders are important characters in the Pokémon video game series. They are trainers who specialize in a specific type of Pokémon and serve as challenges for players. Each Gym Leader has a unique team of Pokémon that players must defeat to earn a Gym Badge, which is necessary for progressing in the game. Defeating a Gym Leader not only grants players a badge but often also rewards them with a special move or item. Gym Leaders are typically found in Pokémon Gyms, which are themed locations that reflect their specialty. Players must strategize and prepare their teams to overcome these skilled trainers.